What's Changed

• fix: placeholder in default title by @Himself65 in https://github.com/toeverything/blocksuite/pull/494
• fix: height in title by @Himself65 in https://github.com/toeverything/blocksuite/pull/495
• fix: double check nullable by @darkskygit in https://github.com/toeverything/blocksuite/pull/499
• feat: run store testing if package change by @darkskygit in https://github.com/toeverything/blocksuite/pull/498
• refactor: flatten line start backspace by @lawvs in https://github.com/toeverything/blocksuite/pull/479

Full Changelog: https://github.com/toeverything/blocksuite/compare/@blocksuite/editor@0.3.0...@blocksuite/editor@0.3.1